1 Answer
Armored cable, often referred to as BX cable (a brand name), is a type of electrical wiring that has a protective metal sheath around the conductors. The purpose of using armored cable in electrical wiring includes the following:
1. Physical Protection:
The metal sheath (usually made of aluminum or steel) protects the wires inside from physical damage. It helps prevent cuts, abrasions, or crushing that could occur in environments where the wiring may be exposed to impact or mechanical stress, such as in industrial settings or underground.
2. Grounding:
The metal armor also serves as a grounding path. In the case of a short circuit or fault, the armor can conduct the electrical current to the ground, helping to prevent electrical shock or fire hazards. This makes BX cable safer in certain applications.
3. Enhanced Durability:
The metal outer layer makes armored cable more durable compared to non-metallic cables (like Romex). It can withstand more wear and tear, which is especially important in commercial or industrial environments where cables might be exposed to harsh conditions.
4. Compliance with Codes:
In some areas, local building codes or regulations require the use of armored cable for specific installations. For example, when running wires through areas with high potential for mechanical damage or where wiring is exposed to outdoor elements, armored cable may be mandated.
5. Fire Resistance:
The metal sheath adds some level of fire resistance, as it can protect the cables from heat and flames, preventing the fire from spreading easily along the wire.
Summary:
In simple terms, armored cable is like a tough "armor" for your electrical wiring. It shields the wires from physical damage, helps with grounding, and makes the wiring more reliable in tough conditions. It’s commonly used in situations where the wiring might need extra protection.